I reversed engineerd it and got Critical, Overkill, and Redoubt. Redoudt game me Generals/superior.
However, there are other Superior types you can get from Redoubt I think, atleast from what I read. Trying to get the one where you get Def and Shield rating. I'm not sure if thats possiblei if you already have one Superior from redoubt.
Thought i'd ask since I don't want to keep wasting credets lol.